// 云函数入口文件
const cloud = require('wx-server-sdk')
cloud.init()

const db = cloud.database()
const _ = db.command


// 云函数入口函数
exports.main = async(event, context) => {
  const wxContext = cloud.getWXContext()
  try {
    console.log(event)
    return await db.collection('star').where({
      _openid: event.openid,
      concert_Id: event.concertId
    }).remove()
  } catch (e) {
    console.error(e)
  }

  return {
    event,
    openid: wxContext.OPENID,
    appid: wxContext.APPID,
    unionid: wxContext.UNIONID,
  }
}